“Summer Time Rendering” follows Shinpei Ajiro, a young man whose parents died when he was young, and who then moved in with his childhood best friends — sisters Ushio and Mio Kofune. The story begins when Shinpei returns to his hometown of Wakayama City on the island of Hitogashima to attend Ushio’s funeral. Soon, he discovers that many of the residents suffer from a mysterious “Shadow disease,” and that both Ushio’s death and those of his parents are connected to it. As Shinpei digs deeper and deeper into the mystery, he realizes that he can go back in time and prevent Ushio’s death–but in order to do that, he has to navigate multiple time loops (via Otaku Art).
In terms of genre, “Summer Time Rendering” is a supernatural mystery-thriller with elements of both horror and action. While the story is chock full of suspense, there’s also plenty of action along the way, too.